Reland of Add initial CL for RandomOrder chromium.fyi bot

scripts/slave/chromium/layout_test_wrapper.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """A wrapper script to run layout tests on the buildbots.
 
 Runs the run-webkit-tests script found in third_party/WebKit/Tools/Scripts above
 this script. For a complete list of command-line options, pass '--help' on the
 command line.
@@ skipping 78 matching lines @@
   if options.platform:
     command.extend(['--platform', options.platform])
   if options.skipped:
     command.extend(['--skipped', options.skipped])
   if options.no_pixel_tests:
     command.append('--no-pixel-tests')
   if options.enable_wptserve:
     command.append('--enable-wptserve')
   if options.batch_size:
     command.extend(['--batch-size', options.batch_size])
+  if options.order:
+    command.extend(['--order', options.order])
+  if options.seed:
+    command.extend(['--seed', options.seed])
   if options.run_part:
     command.extend(['--run-part', options.run_part])
   if options.builder_name:
     command.extend(['--builder-name', options.builder_name])
   if options.build_number:
     command.extend(['--build-number', options.build_number])
   command.extend(['--master-name', slave_utils.GetActiveMaster() or ''])
   if options.step_name:
     command.extend(['--step-name', options.step_name])
   # On Windows, look for the target in an exact location.
@@ skipping 86 matching lines @@
       help='option for handling Skipped, passed through to run-webkit-tests.')
   option_parser.add_option('--no-pixel-tests', action='store_true',
                            default=False,
                            help='disable pixel-to-pixel PNG comparisons')
   option_parser.add_option('--enable-pageheap', action='store_true',
                            default=False, help='Enable page heap checking')
   option_parser.add_option('--batch-size',
                            default=None,
                            help=('Run a the tests in batches (n), after every '
                                  'n tests, the test shell is relaunched.'))
+  option_parser.add_option('--order', action='store', default=None,
+                           help=('Determine the order in which the test cases will be run. '
+                                 '"none" == use the order in which the tests were listed '
+                                 'either in arguments or test list, '
+                                 '"natural" == use the natural order (default), '
+                                 '"random" == pseudo-random order. Seed can be specified '
+                                 'via --seed, otherwise a default seed will be used.')),
+  option_parser.add_option('--seed', type='int', default=None,
+                           help=('Seed to use for random test order. '
+                                 'Only applicable in combination with --order=random.')),

[qyearsley, 2016/10/28 22:41:05]

Note, fix is here

   option_parser.add_option('--run-part',
                            default=None,
                            help=('Run a specified part (n:l), the nth of lth'
                                  ', of the layout tests'))
   option_parser.add_option('--builder-name',
                            default=None,
                            help='The name of the builder running this script.')
   option_parser.add_option('--step-name',
                            default=None,
                            help='The name of the step running this script.')
@@ skipping 49 matching lines @@
   options, args = option_parser.parse_args()
   options.build_dir = build_directory.GetBuildOutputDirectory()
 
   # Disable pageheap checking except on Windows.
   if sys.platform != 'win32':
     options.enable_pageheap = False
   return layout_test(options, args)
 
 if '__main__' == __name__:
   sys.exit(main())